SpaceAtlas Space Object Data
NASA JPL SBDB · 2011 UY192

2011 UY192

2011 UY192 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.204 AU it takes 1.32 yr to circle the Sun.

Apollo Observations: 23
Orbital Period · P
1.32 yr
v(q)
43 km/s
v(Q)
17.2 km/s
Diameter · ≈
0.04 km
TJ
5.19
Eccentricity · e
0.4294

Orbit and dynamics

The path is an ellipse reaching 0.687 AU from the Sun at perihelion and 1.721 AU at aphelion, a radial span of 1.034 AU.

Applying Kepler's third law to a = 1.204 AU gives an orbital period of 1.32 yr, or about 483 days.

The high eccentricity (0.429) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 4.82° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 43 km/s at perihelion and falls to 17.2 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 24.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 23 observations and has a weighted RMS residual of 0.6034 arcseconds.

Condition code U = 8 signals a poorly constrained orbit, so its future path should be treated as provisional.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
1.204 AU
Eccentricity
0.4294
Perihelion
0.687 AU
Aphelion
1.720998 AU
Inclination
4.82°
Orbital Period
— yr
Epoch
2455863.5
Mean Anomaly
306.54°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2044-Nov-07 11:44 0.122883 AU
18382968 km
16.58 km/s
2048-Oct-24 18:22 0.344673 AU
51562402 km
25.35 km/s
2050-Jun-08 05:02 0.300271 AU
44919923 km
25.02 km/s
2073-Oct-26 11:05 0.297432 AU
44495130 km
24.54 km/s
2075-Jun-09 01:05 0.417316 AU
62429533 km
25.11 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
24.5

Orbit Quality

RMS
0.60336
Condition
8
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Keep exploring

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